package hyg;

import java.util.Scanner;

/**
 * Created by brss on 2018/9/22.
 */
public class Test {
    public static void main(String[] args) {
        int[] arr = new int[1998];
        Scanner sc = new Scanner(System.in);
        for (int i=0; i < 1998 ;i++) {
            arr[i] = sc.nextInt();
        }
        System.out.println(arr.length);
    }
}
